I think the highlight of this picture is definitely the atmosphere, first off, and then the background. Very detailed, very believable background, and I like how you put those grass blades up right near the front.

While I do very much like the dragon, I feel like the top-left sides of it are a bit blurry and smudged. Other than that, it's fantastic.

Oh yeah, and I like how you put many colours into the clouds. It makes them look super cool

One question: is that water over at the left? It looks like water in my opinion